chore: use pantry monorepo action instead of pantry-setup

Author: glennmichael123

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
       fail-fast: false
     steps:
       - uses: actions/checkout@v4
-      - uses: home-lang/pantry-setup@v1
+      - uses: home-lang/pantry/packages/action@main
         with:
           packages: ziglang.org@${{ matrix.zig-version }}
       - run: zig build
@@ -28,7 +28,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: home-lang/pantry-setup@v1
+      - uses: home-lang/pantry/packages/action@main
         with:
           packages: ziglang.org@latest
       - run: zig fmt --check .